Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
3691349Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
10198708552392411649.9old
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbkFAC2F9019C31A2FA1013
Verified2017-11-29Oliver KruseFAC2F9019C31A2FA1285177713
History
DateUserTypeResult
2022-05-28JossNF-PM1
B1=100000, B2=130364850
2022-03-01JossNF-PM1
B1=100000
2017-11-29Oliver KruseC-PRP
M3691349/1019870855239241 : FAC2F9019C31A2FA
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M3691349/1019870855239241 : FAC2F9019C31A2FA
PRP: Verified
PRP without proof (not generated)